📝 working on draft readme

readme_draft.md

@@ -2,35 +2,43 @@
 
 # PTTH
 
-PTTH lets you run file servers from behind NAT / firewalls.
+PTTH is a web server.
+
+A web server has:
+
+1. A public host
+2. Files to serve
+
+**With PTTH, the files can live outside of the public host.**
+
+If you want to host 1 TB of files, normally you'd put them on the
+cloud server:
 
 ```
-HTTP clients            ptth_server instances
-
-Firefox ---> |            | <--- Server 1
-Chromium --> |            | <--- Server 2
-Wget ------> | ptth_relay | <--- Server 3
-Curl ------> |            | <--- Server 4
-Reqwest ---> |            | <--- Server 5
+Cloud
+             HTTP server ----> 1 TB of files
+                 ^
+Not cloud        |
+             HTTP client
 ```
 
-# Setup
+But uploading 1 TB to the cloud is expensive and slow, even if
+you're sending it to S3-like blob storage.
 
-Pick a relay computer and a server computer.
+With PTTH, the files can live outside of the cloud:
 
-The relay must be able to accept incoming HTTP connections. If the relay
-will be exposed to the Internet, you should use Nginx, Caddy, or Apache as a
-reverse proxy to terminate TLS in front of ptth_relay. Relays on the Internet
-will typically have a domain name so that clients and servers can find them.
+```
+Cloud
+                 +-----> ptth_relay <------+
+                 |                         |
+Not cloud        |                         |
+             HTTP client               ptth_server
+                                      1 TB of files
+```
 
-The server must have read access to the files you want to serve, and it must
-be able to make outgoing HTTP(S) connections to the relay. The server
-does not need a static IP, since it won't accept any incoming HTTP connections.
+The PTTH server lives where the files live.
+The cloud host runs a relay which streams files from the end
+server as the client demands.
 
-Begin installing PTTH. Run `cargo install ptth_relay` on the relay and
-`cargo install ptth_server` on the server. ptth_server is manually tested on 
-Windows and Linux. ptth_relay is manually tested on Linux only.
-
-- Run ptth_relay on cloud host
-- Configure ptth_server for relay, with auto keygen
-- Add tripcode to relay config
+For home users, this can save you money - The relay server
+doesn't need to store any of your files.